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26%
Server virtualization with VirtualBox
30.11.2025
Home »  Archive  »  2012  »  Issue 10: Traff...  » 
© Federico Caputo, 123RF.com
the virtual machine consoles in your browser with phpVirtualBox. Free or Not Free? Up to version 4.0 of VirtualBox, both a commercial and an open source edition (OSE) existed. The OSE often was available
26%
Creating an SFTP jail
30.11.2025
Home »  Archive  »  2011  »  Issue 3: Are yo...  » 
Juan Manuel Ordonez, 123RF.com
be replaced solely with the sshd configuration directives shown in Listing 3. Line 16 specifies that SFTP will listen on port 2202 instead of the default SSH port 22. This option is configurable and left
26%
An IT nomad's daily diary
30.11.2025
Home »  Archive  »  2011  »  Issue 6: Perfor...  » 
© Kateryna Pruchkovska, 123RF.com
","stage","app","gateway","eth0-ip","eth0-mask","eth1-mac","eth1-ip","eth1-mask" ] 19 system_dict = {} 20 21 f = open(cblr_systems, "r") 22 for line in f: 23 if line.startswith("#"): 24 continue 25 system
26%
Netcat – The admin's best friend
31.10.2025
Home »  Archive  »  2012  »  Issue 12: NAS S...  » 
© Dmitry Rukhlenko, 123RF.com
the source port of your connection to 16000, you could add the -p option: # nc -p 16000 examplehost.tld 22 To add a timeout for latency testing, you could use the -w parameter with the number of seconds – 30
26%
A standard cloud computing API
30.11.2025
Home »  Archive  »  2011  »  Issue 6: Perfor...  » 
another could allow the user to set up memory of between 1 and 8GB in increments of 512MB. The Deltacloud API bundles all these possibilities into hardware profiles, which means the clients are provided
26%
Shell scripts: Equal rights for Unix derivatives and Linux
30.11.2025
Home »  Archive  »  2010  »  Issue 2: Backup...  » 
Mike Flippo, 123RF
OS*) 15 PING="ping" 16 PING2="" 17 ;; 18 esac 19 ... 20 21 for i in server1 server2 server3 workstation1 workstation2 22 do 23 $PING $i $PING2 > /dev/null 24 if [ "$?" != "0
25%
Data acquisition with shell tools
30.11.2025
Home »  Archive  »  2010  »  Issue 2: Backup...  » 
Dmitriy Syechin, 123RF
# If the line already exists .... 13 if [ $back -eq 0 ]; 14 then 15 echo "############### Line already exists! #############" 16 grep $keyfield $newdat 17 echo
25%
Monitoring daemons with shell tools
30.11.2025
Home »  Archive  »  2010  »  Issue 1: System...  » 
© Shariff Che'Lah, 123RF.com
is not accessible! ****************" >> dba.log 15 /usr/local/etc/rc.d/002pgsql.sh start 16 sleep 15 17 psql -U monitor -d monitor -c "select * from watch;" 18 19 if [ $? -eq 0 ]; 20 21 then 22
25%
Give your servers the once over with Nmap
31.10.2025
Home »  Archive  »  2012  »  Issue 11: Cloud...  » 
© ragsac, 123RF.com
.nmap.org (64.13.134.52): Not shown: 994 filtered ports PORT STATE SERVICE VERSION 22/tcp open ssh OpenSSH 4.3 (protocol 2.0) 25/tcp closed smtp
25%
An IT nomad's diary
30.11.2025
Home »  Archive  »  2011  »  Issue 5: Pen Te...  » 
© Jasmin Merdan, 123RF.com
is MySQL or SQLite. 128MB disk space and 256MB RAM are the available hardware resources in a shared-hosting environment. If you need more, you have to upgrade to the Flex level, which means having

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